1. st/sta/stitut=stand(站立)
steady: st(站立)+ead+-y(…的)→稳的
destination: de-(leave)+st(站立)+in+-ation→目的地
contrast: contra-(against)+st(站立)→对比
circumstance: circum-(round)+st(站立)+-ance→环境
restore: re-(back,again)+st(站立)+ore→修复
distance: dis-(apart)+st(站立)+-ance→分开站→距离
distant: di-(apart)+st(站立)+-ant(…的)→疏远的
estate: e-(out)+st(站立)+-ate→站立着的物体→不动产
obstacle: ob-(against)+sta(站立)+-cle→障碍
statement: sta(站立)+te+-ment→陈述
status: stat(站立)+us→地位,身份
substance: sub-(under)+st(站立)+-ance→立于表象之下→实质
substantial: sub-(under)+sta(站立)+nt+-ial(…的)→牢固的
install: in-+sta(站立)+ll→安置
installation: install(设置)+-ation→安置
static: sta(站立)+-tic(…的)→静止的
stable: st(站立)+-able(…的)→稳定的
instant: in-(upon,near)+sta(站立)+nt→立即的
constitute: con-(together)+stitut(站立)+e→站在一起→组成
constitution: con-(together)+stitut(站立)+-ion→组成
institute: in-(up)+stitut(站立)+e→被建立起来的场所→学院
institution: institut(e)(建立)+-ion社会公共机构
substitute: sub-(under)+stitute(站立)→站在下面等着→代替
2. strain,strict,string,stress=draw tight(拉紧)
restraint: re-(back)+strain(拉紧)+t→抑制
restrain: re-(back)+strain(拉紧)→抑制
constrict: con-(together)+strict(拉紧)→使缩紧
district: di-(apart)+strict(拉紧)→地区
restrict: re-(again)+strict(拉紧)→约束
distress: di-(apart)+stress(拉紧)→使痛苦
3. tain, ten, tin=hold(拿), keep(保持)
attain: at-(to)+tain(拿)→拿到→达到
contain: con-(together)+tain(保持)→包含
container: contain(容纳)+-er(表物)→容器
maintain: main(head)+tain(拿)→保持
obtain: ob-(near)+tain(拿)→获得
retain: re-(back)+tain(拿)→保持,保留
sustain: sus-(下面)+tain(保持)→在下面保持→支持,支撑
entertainment: entertain(使欢乐,招待)+-ment→娱乐
entertain: enter-(among)+tain(保持)→使欢乐
content: con-(together)+ten(拿)+t→拿在一起→内容,容量
maintenance: main(head)+ten(拿)+-ance→保持
continue: con-(together)+tin(拿)+ue→延伸
continual: continu(=continue)+-al(…的)→不停的